Top Five Fifth-Gen Jets in World’s Air Forces

South Korea has formally kicked off production of its KF-21 Boramae (lit. ‘Fighting Hawk’) jet fighter. Korea Aerospace Industries has a $1.41 bln contract to build 20 KF-21s by 2027, and 120 by 2032. The KF-21 is classified as a 4.5-generation jet, but future upgrades are expected to turn it into a fifth-gen aircraft.